Finding the Fourth Proportional to 12,172, 18,261.24 and 3,852.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,172 : 18,261.24 = 3,852.17 : x
2. Step 2: Convert to fraction form
   12,172/18,261.24 = 3,852.17/x
3. Step 3: Cross multiply
   12,172x = 18,261.24 × 3,852.17
4. Step 4: Simplify right side
   12,172x = 70,345,400.89
5. Step 5: Solve for x
   x = 70,345,400.89/12,172
6. Step 6: Final answer
   x = 5,779.28